-the Hickory Dickory Dock News Flash where the horse destroys the clock
-where he interviews the Count as elevator operator, and our favorite vampire is too interested in counting the floor than taking him anywhere, and in the end Kermit has to hop up the stairs (and in his trench coat too)
-the Little Old Lady Who Lived in a Shoe News Flash where she saddles him with the children because it's bowling night
-any time Grover tries to sell him something impractical for a frog
-the sketches where he tries to be a film director and Forgetful Jones keeps forgetting what to do in each take.

Well let's see.My favourite Kermit moments would be as follows:
Kermit has Grover walk up a flight of stairs.
Kermit teaching Grover about light and heavy.
The big bad wolf and the three little pigs NewsFlash.(I love the way the wolf caused a severe wind storm with his huffing,puffing and blowing.With the clouds wizzing through the sky at super speed.)
Little Miss Moffat and the spider(who frightened the frog away)NewsFlash.
This Frog
Being Green
Do De Rubber Duck
The Kermit The Frog T-shirt.
The Subway

Kermit did indeed sing an "African Alphabet", with tribal-looking Muppets as background vocalists. That's not the same alphabet clip that uses "B is for Bayou", though: Kermit performs his "Alphabet in the Swamp" alone, speaking the words to a beat-box/synth accompaniment.